Button, button assembly and alert device

Abstract

An alert device includes a button assembly and an alert switch. The button assembly includes a casing and a button. The casing has a first through hole and a plurality of second through holes. The button includes a pressed part, an activation part and a plurality of hook parts. The pressed part has a central portion and a non-central portion, the non-central portion is connected to the central portion, the activation part is connected to the central portion, the plurality of hook parts are connected to the non-central portion, the activation part is disposed through the first through hole, and each of the plurality of hook parts is respectively disposed through each of the plurality of second through holes and is connected to the casing. The alert switch is disposed corresponding to the activation part.

What is claimed is: 
     
       1. A button assembly, for activating a switch, comprising:
 a casing, having a first through hole and a plurality of second through holes; 
 a button, comprising a pressed part, an activation part and a plurality of hook parts, wherein the pressed part has a central portion and a non-central portion, the non-central portion is connected to the central portion, the activation part is connected to the central portion, the plurality of hook parts are connected to the non-central portion, the activation part is disposed through the first through hole, and each of the plurality of hook parts is respectively disposed through each of the plurality of second through holes, and the plurality of hook parts are connected to the casing; and 
 a mount piece, mounted on the casing, wherein the plurality of hook parts are disposed through the mount piece and are directly engaged with the mount piece. 
 
     
     
       2. The button assembly according to  claim 1 , wherein the casing has a stopping surface, and at least part of each of the plurality of hook parts is located at one side of the casing located opposite to the stopping surface. 
     
     
       3. The button assembly according to  claim 2 , further comprising an elastic component, wherein the elastic component is disposed at the pressed part, and the pressed part is forced away from the stopping surface via the elastic component selectively. 
     
     
       4. The button assembly according to  claim 1 , wherein the pressed part has an outer annular edge, and a distance from each of the plurality of hook parts to the activation part is greater than a distance from each of the plurality of hook parts to the outer annular edge. 
     
     
       5. The button assembly according to  claim 1 , wherein each of the plurality of hook parts comprises a connection arm and a hook structure, the connection arm is connected to the non-central portion of the pressed part, and the hook structure protrudes from the connection arm. 
     
     
       6. The button assembly according to  claim 5 , wherein the pressed part has an outer annular edge, and the hook structure of each of the plurality of hook parts is entirely located in an area surrounded by an extension surface of the outer annular edge. 
     
     
       7. The button assembly according to  claim 5 , wherein the mount piece has a plurality of mounting holes, each of the plurality of mounting holes is respectively connected to each of the plurality of second through holes, each of the plurality of mounting holes has a released portion and an engagement portion connected to each other, the engagement portion has a width smaller than a width of the released portion, the connection arm of each of the plurality of hook parts is respectively disposed through the engagement portion of each of the plurality of mounting holes, and the hook structure of each of the plurality of hook parts is engaged with the mount piece. 
     
     
       8. The button assembly according to  claim 7 , wherein the casing has two guiding protrusions, the mount piece has two curved guiding holes, and the two guiding protrusions are located in the two curved guiding holes. 
     
     
       9. The button assembly according to  claim 7 , wherein a quantity of the plurality of hook parts of the button is four, a quantity of the plurality of second through holes of the casing is four, and a quantity of the plurality of mounting holes of the mount piece is four. 
     
     
       10. The button assembly according to  claim 5 , further comprising a mount piece connected to the casing, the mount piece has a through hole, an inner annular surface, a plurality of engagement protrusions and a plurality of mount recesses, the inner annular surface forms the through hole, the plurality of engagement protrusions protrude from the inner annular surface, each of the plurality of mount recesses is formed between two of the plurality of engagement protrusions located adjacent to each other, the connection arm of each of the plurality of hook parts is disposed through the through hole, and the hook structure of each of the plurality of hook parts is respectively engaged with each of the plurality of engagement protrusions. 
     
     
       11. The button assembly according to  claim 1 , wherein the mount piece has a plurality of mounting holes, each of the plurality of mounting holes is respectively connected to each of the plurality of second through holes, and the casing has a stopping surface, each of the plurality of hook parts is respectively disposed through each of the plurality of second through holes and each of the plurality of mounting holes, and at least part of each of the plurality of hook parts is located at one side of the casing located opposite to the stopping surface. 
     
     
       12. An alert device, comprising:
 a button assembly, comprising: 
 a casing, having a first through hole and a plurality of second through holes; 
 a button, comprising a pressed part, an activation part and a plurality of hook parts, wherein the pressed part has a central portion and a non-central portion, the non-central portion is connected to the central portion, the activation part is connected to the central portion, the plurality of hook parts are connected to the non-central portion, the activation part is disposed through the first through hole, each of the plurality of hook parts is respectively disposed through each of the plurality of second through holes, and the plurality of hook parts are connected to the casing; and 
 a mount piece, mounted on the casing, wherein the plurality of hook parts are disposed through the mount piece and are directly engaged with the mount piece; and 
 an alert switch, disposed corresponding to the activation part. 
 
     
     
       13. The alert device according to  claim 12 , wherein the casing has a stopping surface, and at least part of each of the plurality of hook parts is located at one side of the casing located opposite to the stopping surface. 
     
     
       14. The alert device according to  claim 12 , wherein the pressed part has an outer annular edge, and a distance from each of the plurality of hook parts to the activation part is greater than a distance from each of the plurality of hook parts to the outer annular edge. 
     
     
       15. The alert device according to  claim 12 , wherein each of the plurality of hook parts comprises a connection arm and a hook structure, the connection arm is connected to the non-central portion of the pressed part, and the hook structure protrudes from the connection arm. 
     
     
       16. The alert device according to  claim 15 , wherein the pressed part has an outer annular edge, and the hook structure of each of the plurality of hook parts is entirely located in an area that is surrounded by an extension surface of the outer annular edge. 
     
     
       17. The alert device according to  claim 15 , wherein the mount piece has a plurality of mounting holes, each of the plurality of mounting holes is respectively connected to each of the plurality of second through holes, each of the plurality of mounting holes has a released portion and an engagement portion connected to each other, the engagement portion has a width smaller than a width of the released portion, the connection arm of each of the plurality of hook parts is respectively disposed through the engagement portion of each of the plurality of mounting holes, and the hook structure of each of the plurality of hook parts is engaged with the mount piece. 
     
     
       18. The alert device according to  claim 15 , wherein the mount piece has a through hole, an inner annular surface, a plurality of engagement protrusions and a plurality of mount recesses, the inner annular surface forms the through hole, the plurality of engagement protrusions protrude from the inner annular surface, each of the plurality of mount recesses is formed between two of the plurality of engagement protrusions which are located adjacent to each other, the connection arm of each of the plurality of hook parts is disposed through the through hole, and the hook structure of each of the plurality of hook parts is respectively engaged with each of the plurality of engagement protrusions. 
     
     
       19. A button, comprising:
 a pressed part, having a central portion, a non-central portion and an outer annular edge, wherein the non-central portion is connected to the central portion, and the outer annular edge is connected to the non-central portion; 
 an activation part, connected to the central portion; and 
 a plurality of hook parts, connected to the non-central portion, wherein a distance from each of the plurality of hook parts to the activation part is greater than a distance from each of the plurality of hook parts to the outer annular edge; 
 wherein each of the plurality of hook parts comprises a connection arm and a hook structure, the connection arm is connected to the non-central portion of the pressed part, and the hook structure protrudes from the connection arm, an extension direction of the connection arm from the non-central portion is different from a protruding direction of the hook structure from the connection arm, and a length that the hook structure protrudes from the connection arm is equal to or larger than 0.8 mm.